Automatic riveting machine for fence connecting piece

Abstract

The utility model relates to the technical field of riveting machines, in particular to an automatic riveting machine for a fence connecting piece, which comprises a rack, a riveting device and a feeding device, the riveting device is fixedly connected onto the rack, the riveting device is used for riveting a riveting piece and a square tube to form a riveting piece, and the feeding device is adjacent to the riveting device and is used for feeding. The riveting device is fixedly connected with a material transferring device used for transferring and sending out the riveting pieces. Automation is achieved in the processes of feeding, assembling, riveting and discharging of the fence connecting pieces, dependence on manpower is reduced, and production efficiency can be improved.

Description

Technical Field

[0002] The utility model relates to the technical field of riveting machines, in particular to an automatic riveting machine for fence connectors.

Background Art

[0004] Fence connectors are special fittings used to connect and fix various parts of a fence. They play a crucial role in the installation and maintenance of the fence. These connectors not only provide structural stability but also ensure the overall aesthetics and durability of the fence.

[0005] However, the existing riveting process for fence connectors mainly relies on manual riveting. A series of operations are basically carried out manually, including manual feeding, manual assembly, manual riveting, and manual discharging. These processes highly depend on manual labor for processing and production, and the work efficiency is relatively low. The quality of the products is not very stable, and the production efficiency is relatively low.

Content of the Utility Model

[0007] To solve the technical problem of low production efficiency in current manual operations, the utility model proposes an automatic riveting machine for fence connectors.

[0008] The utility model is realized by the following technical solutions:

[0009] An automatic riveting machine for fence connectors, including a frame. A riveting device for riveting a riveting piece and a square pipe to form a riveted part is fixedly connected to the frame, and a feeding device for feeding is adjacent to the riveting device. A material transfer device for transferring and sending out the riveted part is fixedly connected to the riveting device.

[0010] As described above, in an automatic riveting machine for fence connectors, the riveting device includes a lower bottom plate fixedly connected to the frame and a fixed die set for carrying out riveting fixedly connected to the lower bottom plate. An upper bottom plate corresponding to the lower bottom plate is arranged on the upper side of the lower bottom plate. Machine tool columns are fixedly connected between the lower bottom plate and the upper bottom plate. A workbench plate that can move up and down is arranged on the machine tool columns. A driving device for driving the workbench plate to move is arranged on the upper bottom plate. A moving die set corresponding to the fixed die set to complete riveting is fixedly connected to the lower bottom surface of the workbench plate.

[0011] An automatic riveting machine for fence connectors as described above. The moving module includes an upper die base fixedly connected to the workbench plate and a first clamping block fixedly connected to the upper die base. A positioning portion for positioning the square tube in the vertical direction is provided between the first clamping blocks. The first clamping blocks are fixedly connected with a back release plate, and the back release plate is fixedly connected with an upper release plate. The upper release plate is provided with a movable upper die punch needle group for positioning the square tube in the horizontal direction. The positioning portion is provided with a guiding punch fixed on the upper clamping plate for cooperating with the square tube for positioning.

[0012] An automatic riveting machine for fence connectors as described above. The upper die punch needle group is provided with an upper die punch needle for positioning the square tube in the horizontal direction and a first back plate for pushing the upper die punch needle group. The first back plate is provided with a first upper inclined pushing surface.

[0013] An automatic riveting machine for fence connectors as described above. The fixed module includes a lower die base fixedly connected to the lower bottom plate and a lower release plate capable of being movably pressed and cooperating with the moving module. The lower die base is fixedly connected with a second clamping block, the second clamping block is fixedly connected with a lower backing plate, the lower backing plate is fixedly connected with a lower clamping plate, the lower release plate is fixedly connected with a guide rail group for the riveting piece to pass through. The side wall of the lower release plate is also fixedly connected with a seventh cylinder group. The seventh cylinder group includes a seventh proximity switch penetrating the guide rail group for detecting the arrival of the square tube and a guide pin penetrating the guide rail group and capable of moving in the guide rail group. The width between the guide pins corresponds to the width of the square tube. The lower release plate is also provided with a movable lower die punch needle group installed on the lower release plate for punching the square tube.

[0014] An automatic riveting machine for fence connectors as described above. The lower die punch needle group is provided with a lower die punch corresponding to the riveting hole on the riveting piece and a second back plate for pushing the lower die punch needle group. The second back plate is provided with a second upper inclined pushing surface.

[0015] An automatic riveting machine for fence connectors as described above. The lower clamping plate is provided with a first inclined wedge punch cooperating with the upper die punch needle group, a second inclined wedge punch cooperating with the lower die punch needle group, and a guide hole punch for aligning the riveting piece and the square tube. The first inclined wedge punch is provided with a first lower inclined pushing surface cooperating with the first upper inclined pushing surface, and the second inclined wedge punch is provided with a second lower inclined pushing surface cooperating with the second upper inclined pushing surface.

[0016] An automatic riveting machine for fence connectors as described above, wherein the feeding device includes a feeding part for transferring the riveting piece and the square tube into the riveting device. The feeding part includes a discharging plate fixedly connected to the lower bottom plate for support. On the same side of the discharging plate and the first feeding machine, there is a track groove for transporting the riveting piece. On the same side of the discharging plate and the second feeding machine, there is a conduit group for transporting the square tube. The feeding part further includes a first cylinder group for pushing the riveting piece and a first proximity switch corresponding to the first cylinder group for detecting the in-place situation of the riveting piece. The feeding part further includes a second cylinder group and a second proximity switch corresponding to the second cylinder group for detecting the in-place situation of the riveting piece. The feeding part further includes a third cylinder group for pushing the square tube. The third cylinder group includes a third proximity switch corresponding to the third cylinder group for detecting the in-place situation of the square tube and a pressure measuring elastic piece for temporarily blocking the riveting piece and the square tube until the pressing seat finishes pressing. The feeding part further includes a pressing seat for pressing the riveting piece and the square tube, and the feeding part further includes a fourth cylinder group for pushing the workpiece pressed by the pressing seat.

[0017] An automatic riveting machine for fence connectors as described above, wherein the feeding device further includes a first feeding machine for transporting the riveting piece to the feeding part and a second feeding machine for transporting the square tube to the feeding part. Both the first feeding machine and the second feeding machine are fixedly connected to the frame. The first feeding machine is provided with a first ejector plate for ejecting the riveting piece onto the conveyor belt for transportation and a limiting plate for adjusting the direction of the riveting piece. The second feeding machine is provided with a second ejector plate for ejecting the square tube onto the conveyor belt for transportation.

[0018] An automatic riveting machine for fence connectors as described above, wherein the material transfer device is fixedly connected to one side of the riveting device, and the material transfer device is provided with a grasping part for clamping and transferring and sending out the riveting part.

[0019] Compared with the prior art, an automatic riveting machine for fence connectors proposed by the present utility model has the following beneficial effects:

[0020] An automatic riveting machine for fence connectors of the present utility model includes a frame. A riveting device for riveting a riveting piece and a square tube to form a riveting part is fixedly connected to the frame, and a material transfer device for transferring and sending out the riveting part is fixedly connected to the riveting device. The present utility model realizes automation in the processes of feeding, assembling, riveting, and discharging of fence connectors, reduces the dependence on manual labor, and can improve production efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments.

[0023] Figure 1 It is a schematic structural diagram of the present utility model;

[0024] Figure 2 It is a schematic structural diagram of the riveting device of the present utility model;

[0025] Figure 3 It is an exploded schematic diagram of the moving module of the present utility model;

[0026] Figure 4 It is an exploded schematic diagram of the fixed module of the present utility model;

[0027] Figure 5 It is a schematic structural diagram of the upper die punch clamp block and the lower die punch clamp block of the present utility model;

[0028] Figure 6 It is a schematic diagram of the cooperation between the punch needle group and the punch head group of the present utility model;

[0029] Figure 7 It is a schematic structural diagram of the first inclined wedge punch of the present utility model;

[0030] Figure 8 It is a schematic structural diagram of the second inclined wedge punch of the present utility model

[0031] Figure 9 It is a schematic structural diagram of the first feeding machine of the present utility model;

[0032] Figure 10 It is a schematic structural diagram of the second feeding machine of the present utility model

[0033] Figure 11 It is a schematic structural diagram of the feeding part of the present utility model;

[0034] Figure 12 It is a schematic structural diagram of the third cylinder group of the present utility model;

[0035] Figure 13 It is a schematic structural diagram of the material transfer device of the present utility model;

[0036] Figure 14 It is an exploded schematic diagram of the riveting parts of the present utility model.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0039] Specific embodiments will be combined with Figures 1 to 14 As shown, the technical solution of the present utility model will be further described. An automatic riveting machine for fence connectors includes a frame 4 that supports the overall structure. A riveting device 1 is fixedly connected to the frame 4 and is used to provide a riveting working space and rivet a riveting piece 61 and a square tube 62 to form a riveted piece 6. An upper feeding device 2 for feeding is adjacent to the riveting device. A material transfer device 3 for transferring and sending out the riveted piece 6 is fixedly connected to the riveting device 1. The upper feeding device 2 includes a feeding part 23 for transferring the riveting piece 61 and the square tube 62 into the riveting device 1. The upper feeding device 2 further includes a first feeding machine 21 for conveying the riveting piece 61 to the feeding part 23 and a second feeding machine 22 for conveying the square tube 62 to the feeding part 23. The present utility model realizes the automation of the riveting process, greatly reduces the dependence on manual labor, and can improve the production efficiency of fence connectors.

[0040] In this embodiment, as Figure 2 shown, the riveting device 1 includes a lower bottom plate 13 fixedly connected to the frame 4 and a fixed die set 11 fixedly connected to the lower bottom plate 13 and used to carry out riveting. An upper bottom plate 15 corresponding to the lower bottom plate 13 is arranged on the upper side of the lower bottom plate 13. Machine tool columns 16 are fixedly connected between the lower bottom plate 13 and the upper bottom plate 15. A workbench plate 14 that can move up and down is arranged on the machine tool columns 16. The workbench plate 14 is provided with a working hole 141 for the movement of the workbench plate 14, and the diameter of the working hole 141 is larger than the diameter of the machine tool column 141. The upper bottom plate 13 is provided with a driving device 52 for driving the movement of the workbench plate 14. The driving device 52 is provided with a telescopic piston rod 521 fixedly connected to the upper top surface of the workbench plate 14. A moving die set 13 corresponding to and cooperating with the fixed die set 11 to complete riveting is fixedly connected to the lower bottom surface of the workbench plate 14. The workbench plate 14 can move up and down along the direction of the machine tool columns 16 under the drive of the driving device 52. The moving die set 12 can cooperate with the fixed die set 11 to complete the riveting of the riveting piece 61 and the square tube 62, greatly reducing the dependence on manual labor.

[0041] Furthermore, as Figure 1As shown, the driving device 52 is a hydraulic press, and the driving device 52 is provided with hydraulic power by a hydraulic system 5. The hydraulic system 5 includes a hydraulic station 51 fixedly connected to the frame 4 for providing hydraulic oil and a tubing 53 connected to the hydraulic station 51 and the driving device 52 for transporting hydraulic oil. The frame 4 is provided with a foot cup group 41. The hydraulic system 5 provides power for riveting, and the foot cup group 41 can reduce the vibration caused by riveting and improve safety performance.

[0042] Further, as Figure 3 shown, the moving die module 12 includes an upper die base 121 fixedly connected to the workbench plate 14 and a first clamping block 122 fixedly connected to the upper die base 121. A positioning portion 123 for positioning the square tube 62 in the vertical direction is provided between the first clamping blocks 122. A stripping back plate 124 is fixedly connected to the first clamping blocks 122, and an upper stripping plate 125 is fixedly connected to the stripping back plate 124. The upper stripping plate 125 is provided with a heightening column 1251 for limiting and a movable upper die punch group 126 for positioning the square tube 62 in the horizontal direction. The upper die punch group 126 positions the square tube 62 in the vertical direction, providing a positioning basis for subsequent riveting, and can improve production efficiency and product precision.

[0043] Further, the positioning portion 123 includes an upper clamping plate 1231 fixedly connected to the stripping back plate 124 and an upper back plate 1232 fixedly connected to the upper clamping plate 1231. The positioning portion 123 also includes a guiding punch 1233 fixed on the upper clamping plate 1231 for cooperating with the square tube 62 for positioning. The stripping back plate 124 and the upper stripping plate 125 are provided with guiding through holes 127 aligned with the square tube 62. The upper clamping plate 1231 is provided with an upper precision guiding column 1234 connected to the stripping back plate 124 and a first spring 1235 passing through the upper back plate 1232. When the moving die module 12 is driven by the driving device 52 to press downwards, the guiding punch 1124 and the square tube 62 can be aligned in the guiding through holes 127 to complete the positioning of the square tube 62 in the vertical direction. The first spring 1235 can buffer and dampen vibration during riveting, improving safety performance, and the upper precision guiding column 1234 can ensure the smooth operation of each part of the positioning portion 123.

[0044] Further, as Figure 6As shown, the upper die punch set 126 is provided with an upper die punch 1261 for positioning the square tube 62 in the horizontal direction and an upper die punch clamp block 1262 for clamping the upper die punch 1261. The upper die punch clamp block 1262 is fixedly connected to a first back plate 1263, and the first back plate 1263 is provided with a first upper inclined pushing surface 1264 for pushing the upper die punch set 126. The upper die punch set 126 can position the square tube 62 in the riveting part 6 in the horizontal direction, providing a positioning basis for the riveting process, and can improve production efficiency and product precision.

[0045] Further, as Figure 4 shown, the fixed die set 11 includes a lower die base 111 fixedly connected to the lower bottom plate 13 and a lower stripping plate 115 that can be movably pressed in cooperation with the moving die set 12. The lower die base 111 is fixedly connected to a second clamp block 112, the second clamp block 112 is fixedly connected to a lower backing plate 113, the lower backing plate 113 is fixedly connected to a lower clamping plate 114, and the lower stripping plate 115 is fixedly connected to a lower stripping back plate 116.

[0046] Further, the lower stripping plate 115 is fixedly connected to a guide rail set 117 through which the riveting part 6 passes. The side wall of the lower stripping plate 115 is also fixedly connected to a seventh cylinder group 119. The seventh cylinder group 119 includes a seventh proximity switch 1191 that penetrates the guide rail set 117 for detecting the in-place situation of the square tube 62 and a guide pin 1192 that penetrates the guide rail set 117 and can move in the guide rail set 117. The width between the guide pins 1192 corresponds to the width of the square tube 62. The lower stripping plate 115 is also provided with a lower die punch set 118 that is movably installed on the lower stripping plate 115 for punching the square tube 62. After receiving the signal, the seventh proximity switch 1191 drives the guide pin 1192 by the seventh cylinder group 1119 to limit the riveting piece 61 and the square tube 62, ensuring that the riveting piece 61 and the square tube 62 are in the riveting working area.

[0047] Further, as Figure 5 shown, the lower die punch set 118 is provided with a lower die punch 1181 corresponding to the riveting hole 611 on the riveting piece 61 and a lower die punch clamp block 1182 for clamping the lower die punch 1181. The lower die punch clamp block 1182 is fixedly connected to a second back plate 1183, and the second back plate 1183 is provided with a second upper inclined pushing surface 1184 for cooperatively pushing the lower die punch set 118.

[0048] Further, the lower die base 111 is provided with a second spring 1111 that penetrates through the lower backing plate 113, the lower clamping plate 114, and the lower stripping back plate 116. The spring 1111 is fixedly connected to the lower die base 111. The second spring 1111 can buffer and dampen during riveting, further improving safety performance.

[0049] Further, the lower clamping plate 114 is provided with a first wedge punch 1142 that cooperates with the upper die punch set 126, a second wedge punch 1143 that cooperates with the lower die punch set 118, and a guide hole punch 1144 that aligns with the riveting piece 61 and the square tube 62 that have been positioned. The first wedge punch 1142 is provided with a first lower inclined pushing surface 1145 that cooperates with the first upper inclined pushing surface 1264. The second wedge punch 1143 is provided with a second lower inclined pushing surface 1146 that cooperates with the second upper inclined pushing surface 1184. The lower stripping plate 115 and the lower stripping back plate 116 are provided with a first through hole 1151 for the guide hole punch 1144 to pass through and a second through hole 1152 for the first wedge punch 1142 to pass through. The lower stripping back plate 116 is provided with a fourth through hole 1161 for the second wedge punch 1143 to pass through. During the process of the moving die set 12 being driven downward by the driving device 52 for riveting, the first wedge punch 1142 can cooperate with the first back plate 1363 when the moving die set 13 is pressed down, pushing the upper die punch 1361 to clamp and position the square tube 62 in the horizontal direction. The second wedge punch 1143 can cooperate with the second back plate 1253, pushing the lower die punch 1251 to punch the square tube 62 in the position and direction corresponding to the riveting hole 611. At the same time, the guide hole punch 1144 completes the riveting of the workpiece. After the riveting is completed, the moving die set 12 moves upward to reset. The processes of positioning, punching, and riveting during the riveting process are all completed by the cooperation between components, greatly reducing the dependence on manual labor.

[0050] Further, the lower clamping plate 114 is also provided with a lower precision guide post 1141 that is fixedly connected to the lower clamping plate 114 and penetrates through the lower stripping plate 115 and the lower stripping back plate 116. The first clamping block 132, the stripping back plate 134, and the upper stripping plate 135 are provided with holes that align with the lower precision guide post 1141. The lower precision guide post 1141 can ensure that the fixed die set 11 and the moving die set 13 can be accurately aligned when closed, realizing smooth movement between various parts of the die set and improving product precision.

[0051] In this embodiment, the first loading machine 21 and the second loading machine 22 are both fixedly connected to the frame 4. The first loading machine 21 includes a first ejector plate 212 and a fifth cylinder group 211 for pushing the first ejector plate 212. The first loading machine 21 further includes a limiting plate 213 for adjusting the direction of the riveting piece 61. The second loading machine 22 includes a second ejector plate 222 and a sixth cylinder group 221 for pushing the second ejector plate 222. The first ejector plate 212 and the second ejector plate 222 complete the process of automatically loading the riveting piece 61 and the square tube 62. The limiting plate 213 can adjust the position of the riveting piece 61 to ensure that it is riveted to the square tube 62 in the correct direction.

[0052] Further, as Figure 11 shown, the feeding part 23 includes a discharging plate 231 fixedly connected to the lower bottom plate 13 for support. On the same side of the discharging plate 231 and the first loading machine 21, there is a track groove 232 for transporting the riveting piece 61. The track groove 232 is provided with a stopper 2321 for restricting the entering quantity of the riveting piece 61. When the riveting piece 61 slides in the track groove 232, it will be positioned and stopped with the stop hole 612 of the riveting piece 61 when passing through the stopper 2321. On the same side of the discharging plate 231 and the second loading machine 22, there is a conduit group 233 for transporting the square tube 62. The conduit group 233 is provided with a section of protrusion at the corner to facilitate the smooth passage of the square tube 62. The feeding part 23 further includes a first cylinder group 234 for pushing the riveting piece 61, a first proximity switch 2341 corresponding to the first cylinder group 234 for detecting the in-place situation of the riveting piece 61, a second cylinder group 235, and a second proximity switch 2351 corresponding to the second cylinder group 235 for detecting the in-place situation of the riveting piece 61. The feeding part 23 further includes a third cylinder group 236 for pushing the square tube 62. The third cylinder group 236 includes a third proximity switch 2361 corresponding to the third cylinder group 236 for detecting the in-place situation of the square tube 62 and a pressure-measuring elastic piece 2362 for temporarily blocking the riveting piece 61 and the square tube 62 until the pressing seat 237 finishes pressing. The feeding part 23 further includes a pressing seat 237 for pressing the riveting piece 61 and the square tube 62, and a fourth cylinder group 238 for pushing the workpiece pressed by the pressing seat 237. During the feeding process, the first loading machine 21 completes the positioning of the entering direction of the riveting piece 61. At the same time, a series of cylinder groups and proximity switches complete the transmission of the riveting piece 61 and the square tube 62, greatly reducing the dependence on manual labor.

[0053] When the riveting piece 61 enters the discharge plate 231, the first proximity switch 2341 detects a signal, and the first cylinder group 234 pushes until it approaches the second proximity switch 2351, and the second cylinder group 235 pushes it to the bottom of the pressure plate seat 237; when the square tube 62 enters the discharge plate 231, the third proximity switch 2361 detects a signal, and the third cylinder group 236 pushes it to the bottom of the pressure plate seat 238, and the pressure measuring elastic piece 2361 blocks the riveting piece 61 and the square tube 62 until the pressure plate seat 237 presses and installs the riveting piece 61 and the square tube 62. The cooperation between the cylinder group and the proximity switch greatly reduces the dependence on manual labor and improves the production efficiency and the degree of automation.

[0054] In this embodiment, the material transfer device 3 is fixedly connected to one side of the riveting device 1. The material transfer device 3 includes a grasping part 31 for clamping the riveting part 6 and a driving part 32 fixedly connected to the grasping part 31 for driving the grasping part 31. The installation position of the grasping part 31 of the material transfer device 3 is the same as the direction in which the guide rail group 117 transfers the riveting part 6. The grasping part 31 transfers and sends out the riveting part 6 from the riveting device 1, realizing the automation of the riveting process and reducing the dependence on manual labor.

[0055] The working principle of this embodiment is as follows:

[0056] An automatic riveting machine for a fence connector proposed by the present utility model. The first ejector plate 212 of the first feeding device 21 drives the riveting sheet 61 to be ejected onto the conveyor belt and transported to the feeding part 23 under the drive of the fifth cylinder group 211. The limiting plate 213 limits the direction of the riveting sheet 61. The second ejector plate 222 of the second feeding device 22 drives the square tube to be ejected onto the conveyor belt and transported to the feeding part 23 under the drive of the sixth cylinder group 221; when the riveting sheet 61 is transported to the side plate of the first proximity switch 2341, the first cylinder group 234 pushes it to the side plate of the second proximity switch 2351, and the second cylinder group 235 pushes it to the bottom of the pressure seat 237. When the square tube 62 is transported to the side plate of the third proximity switch 2361, the third cylinder group 236 pushes it to the bottom of the pressure seat 237. The pressure seat 237 presses and installs the riveting sheet 61 and the square tube 62, and then the fourth cylinder group 238 pushes them to the riveting device 1; when the pressed riveting parts 61 and the square tube 62 enter the riveting device 1, after being detected by the proximity switch 1191 on the guide rail group 118, the seventh cylinder group 119 extends. The extension of the seventh cylinder group 119 drives the guide pin 1222 to limit the square tube 62. The moving module 12 presses down along the machine tool column 16 under the drive of the driving device 52. During the pressing-down process, the guiding punch 1233 positions the square tube 62 in the vertical direction. The first lower inclined pushing surface 1145 of the first inclined wedge punch 1142 cooperates with the first upper inclined pushing surface 1264 of the first back plate 1263 to move, driving the upper die punch 1261 to position the square tube 62 in the horizontal direction. The second lower inclined pushing surface 1146 of the second inclined wedge punch 1143 cooperates with the second upper inclined pushing surface 1184 of the second back plate 1183 to move, driving the lower die punch 1181 to punch the square tube 62 in the direction corresponding to the riveting hole 611 of the riveting sheet 6. The punching position corresponds to the riveting hole 611 of the pressed riveting sheet 61. The guide hole punch 1144 rivets the riveting sheet 61 and the square tube 62 after punching. After the riveting is completed, the moving module 12 moves up and resets under the drive of the driving device 52; finally, the grasping part 31 of the material transfer device 3 transfers and sends out the riveted part 6 after riveting from the riveting device 1.

[0057] It should be understood that in this application, terms such as "first" and "second" are used to describe various information, but these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this application, "first" information can also be called "second" information, and similarly, "second" information can also be called "first" information. In addition, the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this application.

[0058] As described above, one or more embodiments are provided in combination with specific content, and it is not determined that the specific implementation of this application is limited only to these descriptions. All those that are similar or identical to the methods and structures of this application, or those that make several technical deductions or substitutions under the premise of the concept of this application should be regarded as the protection scope of this application.

Claims

1. An automatic riveting machine for fence connectors, characterized in that, It includes a frame (4), on which a riveting device (1) for riveting a riveting piece (61) and a square tube (62) to form a riveted piece (6) and a feeding device (2) for feeding adjacent to the riveting device (1) are fixedly connected, and a material transferring device (3) for transferring and sending out the riveted piece (6) is fixedly connected to the riveting device (1).

2. The automatic riveting machine for a fence connecting piece according to claim 1, characterized in that, The riveting device (1) includes a lower bottom plate (13) fixedly connected to the frame (4) and a fixed die set (11) fixedly connected to the lower bottom plate (13) for bearing riveting. An upper bottom plate (15) corresponding to the lower bottom plate (13) is arranged on the upper side of the lower bottom plate (13). A machine tool column (16) is fixedly connected between the lower bottom plate (13) and the upper bottom plate (15). A workbench plate (14) that can move up and down is arranged on the machine tool column (16). A driving device (52) for driving the workbench plate (14) to move is arranged on the upper bottom plate (15). A moving die set (12) corresponding to and cooperating with the fixed die set (11) to complete riveting is fixedly connected to the lower bottom surface of the workbench plate (14).

3. The automatic riveting machine for a fence connector according to claim 2, characterized in that, The moving die set (12) includes an upper die base (121) fixedly connected to the workbench plate (14) and a first clamping block (122) fixedly connected to the upper die base (121). A positioning part (123) for positioning the square tube (62) in the vertical direction is arranged between the first clamping blocks (122). A back plate for removal (124) is fixedly connected to the first clamping block (122). An upper plate for removal (125) is fixedly connected to the back plate for removal (124). A movable upper die punch set (126) for positioning the square tube (62) in the horizontal direction is arranged on the upper plate for removal (125). A guiding punch (1233) fixed on the upper clamping plate (1231) and used for cooperating with the square tube (62) for positioning is arranged on the positioning part (123).

4. The automatic riveting machine for a fence connecting piece according to claim 3, characterized in that The upper die punch set (126) includes an upper die punch (1261) for positioning the square tube (62) in the horizontal direction and a first back plate (1263) for pushing the upper die punch set (126). The first back plate (1263) is provided with a first upper inclined pushing surface (1264).

5. The automatic riveting machine for a fence connector according to claim 4, characterized in that, The described fixed die set (11) includes a lower die base (111) fixedly connected to the lower bottom plate (13) and a lower stripper plate (115) that can be movably pressed in cooperation with the moving die set (12). The lower die base (111) is fixedly connected to a second clamping block (112), the second clamping block (112) is fixedly connected to a lower backing plate (113), the lower backing plate (113) is fixedly connected to a lower clamping plate (114). The lower stripper plate (115) is fixedly connected with a guide rail group (117) for the riveting part (6) to pass through. The side wall of the lower stripper plate (115) is also fixedly connected with a seventh cylinder group (119). The seventh cylinder group (119) includes a seventh proximity switch (1191) that penetrates the guide rail group (117) for detecting the in-place situation of the square tube (62) and a guide pin (1192) that penetrates the guide rail group (117) and can move in the guide rail group (117). The width between the guide pins (1192) corresponds to the width of the square tube (62). The lower stripper plate (115) is also provided with a lower die punch needle group (118) that is movably installed on the lower stripper plate (115) and punches the square tube (62).

6. The automatic riveting machine for a fence connecting piece according to claim 5, wherein, The lower die punch needle group (118) is provided with a lower die punch needle (1181) corresponding to the riveting hole (611) on the riveting piece (61) and a second back plate (1183) for pushing the lower die punch needle group (118). The second back plate is provided with a second upper inclined pushing surface (1184).

7. The automatic riveting machine for a fence connector according to claim 6, characterized in that, The lower clamping plate (114) is provided with a first inclined wedge punch (1142) that cooperates with the upper die punch needle group (126), a second inclined wedge punch (1143) that cooperates with the lower die punch needle group (118), and a guide hole punch (1144) that aligns with the riveting piece (61) and the square tube (62). The first inclined wedge punch (1142) is provided with a first lower inclined pushing surface (1145) that cooperates with the first upper inclined pushing surface (1264), and the second inclined wedge punch (1143) is provided with a second lower inclined pushing surface (1146) that cooperates with the second upper inclined pushing surface (1184).

8. The automatic riveting machine for a fence connecting piece according to claim 2, wherein, The feeding device (2) includes a feeding part (23) that transfers the riveting sheet (61) and the square tube (62) into the riveting device (1). The feeding device (2) further includes a first feeding machine (21) for conveying the riveting sheet (61) to the feeding part (23) and a second feeding machine (22) for conveying the square tube (62) to the feeding part (23). The feeding part (23) includes a discharging plate (231) that is fixedly connected to the lower bottom plate (13) for support. A track groove (232) for transporting the riveting sheet (61) is provided on the same side of the discharging plate (231) as the first feeding machine (21). A conduit group (233) for transporting the square tube (62) is provided on the same side of the discharging plate (231) as the second feeding machine (22). The feeding part (23) further includes a first cylinder group (234) for pushing the riveting sheet (61) and a first proximity switch (2341) corresponding to the first cylinder group (234) for detecting the in-place condition of the riveting sheet (61). The feeding part (23) further includes a second cylinder group (235) and a second proximity switch (2351) corresponding to the second cylinder group (235) for detecting the in-place condition of the riveting sheet (61). The feeding part (23) further includes a pressure seat (237) for press-fitting the riveting sheet (61) and the square tube (62). The feeding part (23) further includes a third cylinder group (236) for pushing the square tube (62). The third cylinder group (236) includes a third proximity switch (2361) corresponding to the third cylinder group (236) for detecting the in-place condition of the square tube (62) and a pressure-measuring elastic sheet (2362) for temporarily blocking the riveting sheet (61) and the square tube (62) until the press-fitting of the pressure seat (237) is completed. The feeding part (23) further includes a fourth cylinder group (238) for pushing the workpiece press-fitted by the pressure seat (237).

9. The automatic riveting machine for a fence connecting piece according to claim 8, wherein, Both the first feeding machine (21) and the second feeding machine (22) are fixedly connected to the frame (4). The first feeding machine (21) is provided with a first ejector plate (212) for ejecting the riveting sheet (61) onto the conveyor belt for transportation and a limiting plate (213) for adjusting the direction of the riveting sheet (61). The second feeding machine (22) is provided with a second ejector plate (222) for ejecting the square tube (62) onto the conveyor belt for transportation.

10. The automatic riveting machine for a fence connector according to claim 1, characterized in that, The material transfer device (3) is fixedly connected to one side of the riveting device (1). The material transfer device (3) is provided with a grasping part (31) for clamping and transferring and sending out the riveted part (6).

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